Disconnecting & connecting tcpsocket with proxy problem

[altVis]

Hi!

I don't know why, but i can't connect to another server after disconnecting from previous with same socket ( using proxy ).
Server sends me http notification "connection established", then my app sends to server ACK and at once closing packet (FIN, ACK).

Connecting with another (new one ) socket just fine, but not acceptable for my app.
Looks like i must completely rewrite( or may be reset) socket.
But how?

[wysota]

Can you show us some code?

[altVis]

socket->setProxy(getProxy());
              socket->connectToHost(host,port);
 
//             ...getting new server's ip...
 
	socket->disconnectFromHost();
//	socket->abort();
	socket->connectToHost(newIp, port);
//              <...From here : 
//Server sends me http notification "connection established", then my app sends to server ACK and at once closing packet (FIN, ACK).

socket->setProxy(getProxy());
              socket->connectToHost(host,port);

//             ...getting new server's ip...

	socket->disconnectFromHost();
//	socket->abort();
	socket->connectToHost(newIp, port);
//              <...From here : 
//Server sends me http notification "connection established", then my app sends to server ACK and at once closing packet (FIN, ACK).

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[wysota]

disconnectFromHost() is a non-blocking call. You have to wait until you get a disconnected signal before you reconnect to some other host.

[altVis]

And with abort() function same story?

[wysota]

same story.

[altVis]

I have tried to reconnect on disconnected() signal...and...same story.
Without proxy everything works fine.

[altVis]

Also i have tried to pause mine app ( from 10 to 60 sec) after disconnecting.
Connection stream looks just fine:
calling disconnectFromHost() function and than sleep for n secs.

Application(A): [FIN,ACK]
Server(S): [FIN,ACK]
A: [ACK]

..pause..

new connection
A : [SYN]
S : [SYN, ACK]
A : [ACK] {http connection }
S : [ACK] {connection established}
A : [ACK]
A : [FIN, ACK] { why??? error occurs only with proxy}
S : [FIN, ACK]
A : [ACK]

[wysota]

Maybe the proxy is somehow broken.

[altVis]

Well. Nope

[wysota]

How do you know that? It is the proxy that terminates the connection, right? Have you checked it using a network sniffer? Does a packet containing FIN+ACK actually originate from the proxy?